2015
DOI: 10.1016/j.ultras.2014.09.003
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Variation of ultrasound image lateral spectrum with assumed speed of sound and true scatterer density

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Cited by 13 publications
(10 citation statements)
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“…The technical origins of this approach are based on the work of Burckhard et al and Wagner et al, who recognized the similarity between laser and ultrasound speckle, and were able to demonstrate analytically increased brightness and reduced speckle size in the focal region (Burckhardt 1978; Wagner et al 1983). These insights have been taken advantage of in several settings involving speed of sound, for example, image quality improvement (Napolitano et al 2006), aberration correction (Nock and Trahey 1985), as well as several efforts in liver steatosis estimation (Kumagai et al 2014) or in general speed of sound measurements (Gyöngy and Kollár 2015). In addition to speckle based analysis, other researchers have used seismology based methods (Anderson et al 2000), triangulation or biprisms (Chen et al 1987; Robinson et al 1991), and tomographically determined phase shifts within the imaged area from different viewing angles (Jaeger et al 2015).…”
Section: Speed Of Soundmentioning
confidence: 99%
“…The technical origins of this approach are based on the work of Burckhard et al and Wagner et al, who recognized the similarity between laser and ultrasound speckle, and were able to demonstrate analytically increased brightness and reduced speckle size in the focal region (Burckhardt 1978; Wagner et al 1983). These insights have been taken advantage of in several settings involving speed of sound, for example, image quality improvement (Napolitano et al 2006), aberration correction (Nock and Trahey 1985), as well as several efforts in liver steatosis estimation (Kumagai et al 2014) or in general speed of sound measurements (Gyöngy and Kollár 2015). In addition to speckle based analysis, other researchers have used seismology based methods (Anderson et al 2000), triangulation or biprisms (Chen et al 1987; Robinson et al 1991), and tomographically determined phase shifts within the imaged area from different viewing angles (Jaeger et al 2015).…”
Section: Speed Of Soundmentioning
confidence: 99%
“…The speed of sound in normal human tissues varies significantly; it ranges from roughly 1430 m/s in breast tissue to 1647 m/s in muscle (Gyongy and Kollar 2015; Mamou and Oelze 2013). Despite this variation, clinical ultrasound scanners typically use an assumed speed of sound (1540 m/s) for image reconstruction.…”
Section: Introductionmentioning
confidence: 99%
“…This assumption has several drawbacks. Since the assumed speed of sound determines the transmit and receive beamforming delay patterns, errors can lead to an aberration in the wavefront and acoustic beamshape and a shift in the location of the peak acoustic response (Anderson et al 2000; Gyongy and Kollar 2015; Napolitano et al 2006; Qu et al 2012). A spatial shift of the intended focal zone, especially during receive beamforming, widens the associated point spread function (PSF) and changes the speckle characteristics in the ultrasound image (Anderson et al 2000; Napolitano et al 2006; Qu et al 2012).…”
Section: Introductionmentioning
confidence: 99%
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